Current sense amp for tight loops
The Texas Instruments INA280A3IDCKT is a single-channel current sense amplifier in a SC-70-5 package. It monitors shunt voltage on a 2.7 V to 20 V supply rail and delivers a 900 kHz bandwidth — enough to catch fast load transients in a power-stage feedback loop or a motor-phase current profile. The 15 µV input offset keeps the measurement error low across the shunt drop, and the 2 V/µs slew rate means the output settles quickly into the ADC or comparator input.
Supply range and temperature coverage
Supply span is 2.7 V to 20 V. Operating temperature range is -40°C to 125°C.
Package and footprint
Housed in a 5-lead SC-70-5 (also listed as SOT-353), the part takes minimal board area. The single-channel design keeps routing simple: one shunt input pair, supply, ground, and output. Surface-mount assembly only.
Sourcing and lifecycle
The INA280A3IDCKT is listed as Active with ROHS3 compliance. No end-of-life notice has been issued. For a BOM line that needs a current-sense amp with this bandwidth and offset, it qualifies for new production without LTB risk. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.